Re occurring codes
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Cadillac Seville / Cadillac Eldorado Forum Discussion, Re occurring codes in Past Cadillac Vehicle Discussion; Been a while since I posted, so this what I need help with. P 0560 system voltage P 1376 ignition ...
  1. #1
    98geldo is offline Cadillac Owners Member
    Automobile(s): 1998 eldorado 1977 Seville
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    Re occurring codes

    Been a while since I posted, so this what I need help with.
    P 0560 system voltage
    P 1376 ignition ground
    P 1520 gear indicator sys
    P 1620 knock sensor
    P 1644 torque control delivered torque output .
    No tcs data
    No sdm data
    P1602 is the only current code. All the other only show history. I have a fresh optima yellow top battery. Today I replaced the ignition cylinder and clock spring and also the knock sensor. After half hr driving codes come back all history except p1602 knock sensor which is new. Car runs great by the way but I gotta take the emission test asap. Thanks for your help.

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    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it.
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    Re: Re occurring codes

    ICM ground cable ? That makes a big difference in ignition circuits performance. Connectors ?

    Here's your pre-2000 waste spark system .......
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  4. #3
    rodnok01's Avatar
    rodnok01 is online now Cadillac Owners Master
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    Re: Re occurring codes

    Quote Originally Posted by 98geldo View Post
    Been a while since I posted, so this what I need help with.
    P 0560 system voltage
    P 1376 ignition ground
    P 1520 gear indicator sys
    P 1620 knock sensor
    P 1644 torque control delivered torque output .
    No tcs data
    No sdm data
    P1602 is the only current code. All the other only show history. I have a fresh optima yellow top battery. Today I replaced the ignition cylinder and clock spring and also the knock sensor. After half hr driving codes come back all history except p1602 knock sensor which is new. Car runs great by the way but I gotta take the emission test asap. Thanks for your help.
    Did you check wiring under the manifold as its a preferred spot for rodents to nest and chew.
    The no data is concerning... It didn't say no codes?
    If no data it means it can't communicate with that device. Is airbag light on also?
    98 ground should be behind the ICM, easily left off.
    There are a bunch of grounds on car, a couple hard to see or get to. I can't remember what issues were when a ground behind the engine (above trans) was bad for a member here but it was a bunch of stuff. Its a strange connection with spade terminals IIRC.

  5. #4
    basscatt's Avatar
    basscatt is offline Master of the Dark Art of Diagnostics
    Automobile(s): 2003 DHS - two-2002 DHS's, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
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    Re: Re occurring codes

    Quote Originally Posted by 98geldo View Post
    Been a while since I posted, so this what I need help with.
    P 0560 system voltage
    P 1376 ignition ground
    P 1520 gear indicator sys
    P 1620 knock sensor
    P 1644 torque control delivered torque output .
    No tcs data
    No sdm data
    P1602 is the only current code. All the other only show history. I have a fresh optima yellow top battery. Today I replaced the ignition cylinder and clock spring and also the knock sensor. After half hr driving codes come back all history except p1602 knock sensor which is new. Car runs great by the way but I gotta take the emission test asap. Thanks for your help.
    ==========================
    to me it looks like a loose/dirty/corroded ground or plug -

  6. #5
    98geldo is offline Cadillac Owners Member
    Automobile(s): 1998 eldorado 1977 Seville
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    Thread Starter
    So far the the no tcs data was due to a loose connection at the motor. The no admin data I’m clueless on and yes the airbag light is on. As far as the ground I’ve been chasing that around for a while. I’ll check all the connections for corrosion next.

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